摘要：You are given a number of case-sensitive strings of alphabetic characters, find the largest string X, such that either X, or its inverse can be found 阅读全文

摘要：You may have wondered why most extraterrestrial life forms resemble humans, differing by superficial traits such as height, colour, wrinkles, ears, ey 阅读全文

摘要：The repetition number of a string is defined as the maximum number R such that the string can be partitioned into R same consecutive substrings. For e 阅读全文

摘要：题面就不弄了 题意：给你一个串，让你求出补充最少的字符形成的回文串 思路:思路很好想，就是对一个串，找其最后一个字符（第一个也行）和原串的反串的最长公共前缀，这样就求出了该串中的已有最长回文，然后把剩下部分 倒序添加到原串上即可。 也就是我们可以固定一个位置，即使反串的第一个单词（原串最后一个），然 阅读全文

摘要：Given a sequence, {A1, A2, ..., An} which is guaranteed A1 > A2, ..., An, you are to cut it into three sub-sequences and reverse them separately to fo 阅读全文